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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-7683) Add method to iterate over all of the existing keys in a statebackend
Date Tue, 26 Sep 2017 12:02:00 GMT

    [ https://issues.apache.org/jira/browse/FLINK-7683?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16180651#comment-16180651

ASF GitHub Bot commented on FLINK-7683:

Github user aljoscha commented on a diff in the pull request:

    --- Diff: flink-contrib/flink-statebackend-rocksdb/src/test/java/org/apache/flink/contrib/streaming/state/RocksDBStateBackendTest.java
    @@ -442,6 +444,32 @@ public void testDisposeDeletesAllDirectories() throws Exception {
    +	public void testGetKeys() throws Exception {
    --- End diff --
    This test should go into `StateBackendTestBase`. This way, you don't have to repeat it
for the Rocks and the Heap backend.

> Add method to iterate over all of the existing keys in a statebackend
> ---------------------------------------------------------------------
>                 Key: FLINK-7683
>                 URL: https://issues.apache.org/jira/browse/FLINK-7683
>             Project: Flink
>          Issue Type: New Feature
>          Components: State Backends, Checkpointing
>            Reporter: Piotr Nowojski
>            Assignee: Piotr Nowojski
> This is required to make possible preserving backward compatibility while changing state
definition of a keyed state operator (to do so operator must iterate over all of the existing
keys and rewrites them into a new state variable).

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